libdecodeqr,QR二维码解码与编码，希望对学习二维码的朋友有所帮助-libdecodeqr, QR dimensional code decoding and encoding, I hope to help friends learn the two-dimensional code

libdecodeqr在ubuntu上编译遇到问题的解决方法，解决如下错误 checking for cvCreateImage in -lcv... no If your system already has OpenCV, append place of the cv.h libdecodeqr.a(imagereader.o): undefined reference to symbol cvApproxPoly -checking for cvCreateImage in-l